Long-Term Debt (Schedule Of Long-Term-Debt) (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2016	Dec. 31, 2015	Dec. 15, 2009
Debt Instrument [Line Items]
Total debt	$ 938.6	$ 1,079.7
Less current maturities	67.5	168.1
Long-term debt	871.1	911.6
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Total debt	$ 75.9	$ 136.3
Interest rate	2.50%	2.50%
North America [Member]
Debt Instrument [Line Items]
Debt discount	$ (255.6)	$ (257.8)
Debt issuance costs	(10.6)	(12.1)
North America [Member] \| Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Total debt	75.9	127.6
North America [Member] \| 5.75% Senior Notes due 2022 [Member]
Debt Instrument [Line Items]
Face Value	600.0	600.0
Debt issuance costs	(7.0)	(8.2)
Total debt	$ 593.0	$ 591.8
Interest rate	5.75%	5.75%
Maturity Date	October 2022	October 2022
North America [Member] \| Subordinated Convertible Notes Due 2029 [Member]
Debt Instrument [Line Items]
Face Value	$ 429.5	$ 429.5	$ 162.9
Debt discount	(255.6)	(257.8)	$ (266.6)
Debt issuance costs	(3.6)	(3.9)
Total debt	$ 170.3	$ 167.8
Maturity Date	November 2029	November 2029
North America [Member] \| Other Debt [Member]
Debt Instrument [Line Items]
Face Value	$ 9.0	$ 9.2
Europe [Member] \| Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Total debt	0.0	8.7
Europe [Member] \| Other Debt [Member]
Debt Instrument [Line Items]
Total debt	7.4	23.4
Latin America [Member] \| Credit Facilities [Member]
Debt Instrument [Line Items]
Total debt	$ 82.4	$ 113.8
Maturity Date	Various	Various
Africa/Asia Pacific [Member] \| Credit Facilities [Member]
Debt Instrument [Line Items]
Total debt	$ 0.6	$ 37.4
Maturity Date	Various	Various

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(16))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(16))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

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Amount, after accumulated amortization, of debt discount.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
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-URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28541-108399

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
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-Subparagraph (SX 210.7-03(a)(16))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

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-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

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The remaining balance of debt issuance expenses that were capitalized and are being amortized against income over the lives of the respective bond issues. This does not include the amounts capitalized as part of the cost of the utility plant or asset.

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